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Finding the Fourth Proportional to 1,864.09, 2,795.07 and 767.15

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Solution

The fourth proportional to 1,864.09, 2,795.07 and 767.15 is: 1,150.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.09 : 2,795.07 = 767.15 : x
  2. Step 2: Convert to fraction form
    1,864.09/2,795.07 = 767.15/x
  3. Step 3: Cross multiply
    1,864.09x = 2,795.07 × 767.15
  4. Step 4: Simplify right side
    1,864.09x = 2,144,223.98
  5. Step 5: Solve for x
    x = 2,144,223.98/1,864.09
  6. Step 6: Final answer
    x = 1,150.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.